#	$OpenBSD: cad,v 1.2 2008/05/08 01:40:57 chl Exp $

#------------------------------------------------------------------------------
# autocad:  file(1) magic for cad files
#

# AutoCAD DWG versions R13/R14 (www.autodesk.com)
# Written December 01, 2003 by Lester Hightower
# Based on the DWG File Format Specifications at http://www.opendwg.org/
0	string	       \101\103\061\060\061		   AutoCAD
>5	string	       \062\000\000\000\000		   DWG ver. R13
>5	string	       \064\000\000\000\000		   DWG ver. R14

# Microstation DGN/CIT Files (www.bentley.com)
# Last updated July 29, 2005 by Lester Hightower
# DGN is the default file extension of Microstation/Intergraph CAD files.
# CIT is the proprietary raster format (similar to TIFF) used to attach
# raster underlays to Microstation DGN (vector) drawings.
# 
# http://www.wotsit.org/search.asp
# http://filext.com/detaillist.php?extdetail=DGN
# http://filext.com/detaillist.php?extdetail=CIT
#
# http://www.bentley.com/products/default.cfm?objectid=97F351F5-9C35-4E5E-89C2
# 3F86C928&method=display&p_objectid=97F351F5-9C35-4E5E-89C280A93F86C928
# http://www.bentley.com/products/default.cfm?objectid=A5C2FD43-3AC9-4C71-B682
# 721C479F&method=display&p_objectid=A5C2FD43-3AC9-4C71-B682C7BE721C479F
0	string	\010\011\376			Microstation
>3	string	\002
>>30	string	\026\105			DGNFile
>>30	string	\034\105			DGNFile
>>30	string	\073\107			DGNFile
>>30	string	\073\110			DGNFile
>>30	string	\106\107			DGNFile
>>30	string	\110\103			DGNFile
>>30	string	\120\104			DGNFile
>>30	string	\172\104			DGNFile
>>30	string	\172\105			DGNFile
>>30	string	\172\106			DGNFile
>>30	string	\234\106			DGNFile
>>30	string	\273\105			DGNFile
>>30	string	\306\106			DGNFile
>>30	string	\310\104			DGNFile
>>30	string	\341\104			DGNFile
>>30	string	\372\103			DGNFile
>>30	string	\372\104			DGNFile
>>30	string	\372\106			DGNFile
>>30	string	\376\103			DGNFile
>4	string	\030\000\000			CITFile
>4	string	\030\000\003			CITFile

# AutoCad, from Nahuel Greco
# AutoCAD DWG versions R12/R13/R14 (www.autodesk.com)
0	string AC1012	AutoCad (release 12)
0	string AC1013	AutoCad (release 13)
0	string AC1014	AutoCad (release 14)

# CAD: file(1) magic for computer aided design files
# Phillip Griffith <phillip dot griffith at gmail dot com>
# AutoCAD magic taken from the Open Design Alliance's OpenDWG specifications.
#
0	belong	0x08051700	Bentley/Intergraph MicroStation DGN cell library
0	belong	0x0809fe02	Bentley/Intergraph MicroStation DGN vector CAD
0	belong	0xc809fe02	Bentley/Intergraph MicroStation DGN vector CAD
0	beshort	0x0809		Bentley/Intergraph MicroStation
>0x02	byte	0xfe
>>0x04	beshort	0x1800		CIT raster CAD
0	string	AC1012		AutoDesk AutoCAD R13
0	string	AC1014		AutoDesk AutoCAD R14 
0	string	AC1015		AutoDesk AutoCAD R2000
